Have you taken the pump apart again to check and make sure that one of the parts didn’t get put together run or didn’t quite get seated in place correctly? Sometimes, something will look like it is in right but actually didn’t quite fit in place all the way. If you are pulling 15” on a short piece, then start at the pump and walk up your line checking every fitting in the mainline carefully. I have seen mainline fittings, connectors, tees, y’s, that due to heat or cold, pull apart every so slightly, that they look like they are together but actually are loosing all the vacuum. Then move onto your smaller lines.
Last edited by BAP; 03-06-2020 at 06:10 AM.
Sugaring for 45+ years
New Sugarhouse 14'x32'
New to Me Algier 2'x8' wood fired evaporator
2022 added a used RB25 RO Bucket
250 mostly Sugar Maples, 15% Soft Maples. Currently,(110on 3/16" and 125 on Shurflo 4008 vacuum, 15 gravity), (16,000 before being disabled)
1947 Farmall H and Wagon with gathering tank
2012 Kubota with forks to move wood around